Cylinder lock



Nov. 8, 1932- A. MAIN CYLINDER LOCK Filed Oct. 17. "1929 INVENTOR Andrew Mar/)7 NEYS Patented Nov. 8, 1932 UNITED STATES PAEEENT OFFICE.

AlN DREW MAIN,-OF CLEVELAND, OHIO, ASSIGNOR TO THE FOUR-WAY LOCK COMPANY, OF CLEVELAND, OHIO, A CGRPORATION OF OHIO CYLINDER LOOK Application filed October 17,1929. Serial No. 400,270.

This invention relates to cylinder locks, its object being to provide an improved construction in which the duty of throwing the bolt is taken away from the ward portion of the key and is assumed by a separatedrivmg part thereof, which consequently Wlll be of heavy form suitable foroperatingheavy lock mechanisms, such as jail looks or the like, without injury to the key, and which invention at .the same time admits of lock protection by a multiple ward key. I

y In the drawing, which represents one suitable embodiment of the invention, Fig. 1 is a front elevation of the casing and lock mechanism, with the cover omitted; Fig.2 is a detail cross section. on the line 2-2, Fig. 3; Figs. 3 and 4. are respectively cross sections, on .a larger scale, on the lines 3-3 and 44., Fig.

1; Fig. 5 is a detail section on the linel55,

Fig. 4 and Fig. 6 is an elevation of the key.

While, the present invention is useful on any kind, size or style of lock,-it has been more particularly designed for the. control and operation of relatively heavy locks, such as jail locks, where .the dead bolt is a rela ti'vely heavy piece of metal, and the other operating parts of the lock are also heavy, so that unavoidable frictional resistance to bolt throwing movement is involved and arelatively strong key is essential. The drawing shows for convenience a simple form of jail lock, comprising a casing including a hollow body portion 1 and a suitable cover 2 in which are mounted the slidable dead bolt 3 and the control lever or levers 4:, shown. as pivoted at 5 and yieldably moved in one direction by suitable springs 6. Said levers are provided with shaped slots 0r openings 7 cooperating with a lug 8-onthe dead bolt, it being necessary tomove the levers laterally or transversely to the direction of sliding bolt movement until they reach certain definite positions, as shown in Fig. 1, beforethe bolt can move, it being also understood that said levers lock the dead bolt in either of its two positions, as is usual.

The lock actuating mechanism includes an operating part, shown as rotatable, themotion of which first sets the levers 4 and then actuation thereof is the same.

to return to latching position.

The operating part referred to, in the form shown, is a rotatable sleeve 9 provided at one point with an actuating arm 10 which engages both the levers and dead bolt to operate them, as shown in Figs. 1 and 4. Said sleeve forms a part of a cylinder lock unit capable of being assembled on the bench as an entirety and of being inserted into or removed from the lock casing, enabling unitsto be interchanged for combination purposes or otherwise. Also, as shown, the lock casing is arranged to receive two of such units in'reversed position, each unit having the necessary lever and bolt throwingarm, so that an operatingkey can be inserted'into the lock from either side. Of

course, the two units engage the levers and bolts at differentpo-ints, but their mannerof By using two units in staggered relation, the entire lock casing may retain comparatively shallow depth. For simplicity, it will be necessary to 1 describe but one of said units, because, except for differences in thearrangement of the bolt throwing arms, they are alike in all respects.

Each unit comprises the sleeve 9 before re ferred to and within it a lock cylinder or bar.- rel 11, closed at one end and open at the other and within which rotates the central plugl2.

Said plug is, of course, cylindrica1 in form, but at one end it is provided with a non-circular portion 13, such as a squared portion, fitting a like opening 14 of the sleeve head 15 and serving as a driving connection between the sleeve and plug. The'cylinder or barrel 11 is provided with an annular flange 16 notched at several points, such as at 17, to re ceive lugs or projections 18 which are rigid with the casing, and which, for example, may extend upwardly from a disc or washer 19 attached thereto or integral therewith. The

.casingcover is usually also providedwith a hollow boss 20 provided with an annular seat 21 to receive an annular flange 22 of the sleeve 9, and which also serves to enclose the end head 15 of the sleeve, and which hollow boss [is provided with a circular opening 23 through which the key is inserted, said opening being usually provided with a notch orextension 24 at one side through which it is necessary to pass a pin 25, insuring that the key 26 be introduced in the lock in the desired position and in no other.

The lock may be provided with any suitable tumbler mechanism between plug and barrel respectively, requiring proper positioning thereof before the plug can be turned. This may either be pin or lever mechanism, but is shown as lever mechanism-of the general term described and claimed in a prior patent, No. 1,594,297, granted July 27, 1926 to James A. Muzzio, to which reference may be had for a more complete description thereof it necessary. Briefly-described, the key and tumbler mechanism is as'tol'lows:

The key is what isknown as a fou'r-way'key, its ward portion 27 being of cruciform cross section, providingfour wards, the edgesof which are formed on combination principles.

The plug isslotted longitudinally and transvers'elyto form intersecting slots 28, Fig. '2, into which the key can'be introduced. In said slots are ioc'a-ted spring pressed pivoted levers '29 adapted to enter or leave longitudinally extending slots or recesses 30 of thecylinder.

The key not only includesthe ward portion 27, but inwardly thereof it is also provided with a heavier and stronger lock driving or operating portion 31, which is preferably noncircular, such as square, and isdesigned to engage with a similarly shaped recess 32 ofthe sleeve. On this driving portion is located'the pin '25 before referred to. The shank and handle of the key maybe of any suitable form,

and heavier, if desired.

- When the key is inserted to home position, as shown in Fig. 3, the several wards-move the "tumblers, such as'the levers 29,to release ,posi- '3 tion and in the particular'form shown, so that they are entirely free of the slots 30 of the cylinder. In the same position of the key the pin 25 has passed thegateway and lies in an annular recess 33 within the boss 20., and the non circu'lar driving portion 31 of the key lies within therecess 32 of the sleeve. In this position, therefore, the key has released the ;plug so that it will turn in the barrel and it has also established driving relation with-the sleeve. Consequently,-the key may be rotated to thereby turn'the sleeve 9 and cause 'itsarm 10 to actuate the lock levers 1 and dead bolt 3 in the usual manner. The key cannot be withdrawn unless the pin 25 is opposite its gateway, so that the key can be introduced into the lock in only one position. Of course, in other positions its wards would not properly actuate the tumblers.

Y iVith this arrangement, the duty of throwingthe dead bolt'is entirely taken away from the ward portion of the key andis assumed by the heavier driving'portion'of the key 31, so injury during operation.

What I claim is: I

1. Lock mechanism, comprising a casing, and a cylinder lock unit insertable into said casing and provided with relatively rotatable cylinder and plug members, connecting means between said casing and-cylinder member for preventing rotation of the latter, and a lock operating member rotatable around the cylinder member and operatively coupled to the plug member.

2. Lock mechanism of the character described in claim 1, said lock operating member being provided with means adapted for direct driving connection to a key.

3. Lock mechanism, comprising a casing, a dead boltm'ovable therein, control levers therefor, and two cylinder lock units side by side inrsaid casing but reversed in position and adapted to separately receivea key introduced from either side of the casing, said units being each provided with op? erating means for actuating said control le vers and dead bolt. A

7 4. Lock mechanism, comprising a casing, a dead bo'lt movable'therein, and a cylinlder lock unit removably fitted to said casing, said unit comprising relatively rotatable cylinder and plug members, a bolt operating sleeve surrounding the cylinder memberand rotataisle with the plug member, and means'io'r preventing relative rotation between the cylinder member andicasing. i 5. Lock mechanism comprising associated cylinder :and plug members, and a lock operating member sleeved upon and rotatable around said cylinder,said plug member and lock operating memberjb'oth being provided with "means adapted *for driving engagement with'a key. v V i 6. Lock.mechanismcomprisingassociated cylinder-and plug members, and a lock operating member sleeved upon-and rotata'ble around .saidcylinder, said plug being provided with a key-way,and' saidlock opera-ting member being provided with a key-receiving driving recess located adjacent to the ke'yway of the plug. 1 7. Lock mechanismcomprising associated cylinder and plug members, and a lock operating member sleeved upon and rotatable around said cylinder, said lock operating member aind said plug member being-coupled to rotate together and both "being provided with means adapted fordriving engagement with' a key. 1

.8. Lock mechanism comprising associated cylinder and plug amembers,'and a lock operating member sleeved upon and rotatable around said cylinder, saidlock operating memberand saidplug member beingcoupled to rotate together, a key-Way in said gplug member, and a key-receiving driving recess in said lock. operating member and located adjacent to the keyay of the plug.

9. Lock mechanism comprising relatively I rotatable cylinder and plug members, tumbler mechanism therefor, a lock operating member sleeved upon and rotatable around said cylin der, said lock operating member being cou-' pled to rotate with said plug member, and said plug member and said lock operating member both being provided with means adapted for driving" engagement with a key.

10. Lock mechanism comprising relatively rotatable cylinder and plug members provided with a cooperating tumbler mechanism, said plug being provided with a multipleway slot to receive a multiple ward key adapted to actuate said tumbler mechanism, a lock operating member associated with said cylinder and coupled to rotate with said plug member, said lock operating member being provided with a key receiving driving recess located adjacent to the key-receiving slot of said plug.

In testimony whereof I hereby aflix my signature.

ANDREW MAIN. 

